1. Aspirin effervescent tablets, 1 tablet is enough. Whitening products are all made of salicylic acid. Aspirin effervescent tablets contain a lot of salicylic acid. Take 1 tablet and put it in your hand. You can dissolve it with a little water (whitening skin care water is the best) and pat it on your face. My friends and I have tried it, and it has no irritation to the skin. If you can't buy effervescent tablets, it will be very obvious. 2. Mix Johnson & Johnson baby powder with milk, stir it into a thick paste, apply it on your face, and take it off after 20 minutes.